Mounted on a plane flying at 3,000 feet at night, an infrared scanner measured the heat emitted by crops.

夜间，一架飞行在3000英尺高空的飞机上安装了一个红外扫描仪，用来测量农作物散发的热量。

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They were now over the fearsome island, flying so low that sometimes a tree grazed their feet.

他们正飞在那可怕的岛屿上方，飞得很低，不时有一棵树擦过他们的脚。

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He was sent flying into the air and landed 20 feet away.

他被抛入空中，在20英尺以外落地。

《柯林斯英汉双解大词典》

In contrast to the Predator, which typically flies at an altitude of 15, 000 feet, the Global Hawk is a high-altitude aircraft capable of flying at 65, 000 feet, beyond the reach of any ground-based weapon.

ECONOMIST: Unmanned aircraft

Northrop Grumman (nyse: NOC - news - people ) Lunar Lander Challenge last year by flying an alcohol-fueled rocket 150 feet in the air to a landing pad 300 feet away.

FORBES: Rocket Man

Armadillo came close to winning the X Prize Foundation's Northrop Grumman Lunar Lander Challenge last year by flying an alcohol-fueled rocket 150 feet in the air to a landing pad 300 feet away.

FORBES: Magazine Article